问题 单项选择题 B型题

青霉素V钾片的含量测定采用()

A.硫酸铈滴定液

B.原子吸收分光光度法

C.反相薄层色谱法

D.硫醇汞盐法

E.气相色谱法

答案

参考答案:D

解析:

检查维生素C中的铁盐和铜盐药典规定采用原子吸收分光光度法。检查维生素E中的生育酚时采用饰量法,用二苯胺指示剂。青霉素类抗生素能与氯化汞定量地反映,在325nm波长处有最大吸收。所以来用紫外分光光度法(硫醇汞盐法)。头孢氨节中测定有关杂质采用反相薄层色谱法。

阅读理解

A king in Africa had a close friend that helped him grow up. The friend had a habit of looking at everything positively(肯定)that happened in his life and saying “This is good”.

One day the king and his friend were out hunting. The friend would prepare the guns for the king. The friend did something wrong in preparing one of the guns, and after the gun from his friend, the king fired it and his thumb(拇指) was blown off. On seeing the situation the friend said as usual, “This is good!” The king replied, “No, this is not good!” He was very angry and sent his friend to jail(监狱).

About a year later, the king was hunting in a forest. Cannibals(食人者) caught him and took him to their village. As they were going to kill him, they noticed that the king was missing a thumb. They never ate anyone who was less than whole, so they sent the king back.

When he returned home, he felt sorry for his treatment of his friend. He went quickly to the jail to speak with his friend. “You were right”, he said. “It was good that thumb was blown off.” And he told the friend all that had just happened. “And so I am very sorry for sending you to jail for so long. It was bad for me to do this.”

“No,” his friend replied, “this is good!” “What do you mean? How could it be good that I sent my friend to jail for a year?” 

“If I had not been in jail, I would have been with you, and I would have been eaten!”

小题1:From the story we learn that ________.

A.the king was not a good friend indeed

B.the king’s friend always knew what would happen

C.the friend would say “This is Good !” when anything happened

D.the king was not good at hunting at all.小题2:The king was sent back by Cannibals because _______.

A.Cannibals never ate a king

B.the king’s friend was in jail

C.the king had a gun with him

D.the king missed his thumb小题3:The best title for the reading is _______.

A.The Lucky King

B.The Great Friend

C.Nothing Stops Real Friendship

D.Everything Happens for the Good

选择题